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Shimano MT800 rotor Centerlock tooth ung

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Item#
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Variants
Display mfg part numbers
140mm inside ver 52808379 25.13€
MPN IRTMT800SSI
140mm Außenver 62807503 25.13€
MPN IRTMT800SSE
160mm Außenver 71000203 25.13€
MPN IRTMT800SE
180mm Außenver (BULK pack) 528B8379 21.01€
MPN KRTMT800ME
180mm Außenver 52809013 25.13€
MPN IRTMT800ME
203mm Außenver (BULK pack) 528B8381 25.13€
MPN KRTMT800LE
Please select a variant.

Powerful brake discs for road and off-road use

Shimano's compact and lightweight RT-MT800 brake discs are characterized by particularly fast heat dissipation thanks to the ICE TECHNOLOGIES FREEZA heat management system. The centerlock design makes installing and removing brake discs child's play.

 

Highlights

  • Advanced heat sync design reduces braking performance degradation
  • A new design of the brake disc improves heat dissipation and reduces the loss of braking power
  • Easy brake disc assembly through toothing and lockring
  • Compatible with plastic and metal coverings (narrow design)

specification

specification I-RTMT800SSI I-RTMT800SI I-RTMT800ME I-RTMT800LE
material stainless steel stainless steel stainless steel stainless steel
construction 2 parts 2 parts 2 parts 2 parts
Gearing Internally toothed Internally toothed Externally toothed Externally toothed
Attachment Centerlock Centerlock Centerlock Centerlock
diameter 140 mm 160 mm 180 mm 203 mm
Covering thickness 1.80 mm 1.80 mm 1.80 mm 1.80 mm
weight approx. 88 g approx. 108 g approx. 132 g approx. 163 g

Technologies used

In this chapter we explain the technologies that the manufacturer uses for this product.

ICE-TECH
Fading, which can occur in the brake disc and pad when braking continuously on long descents, impairs braking performance. Shimano introduced ICE TECHNOLOGIES brake discs and ICE TECHNOLOGIES brake pads to create a cooling technology for consistently high braking performance. The brake disc with its 3-layer sandwich structure made of stainless steel, aluminum and stainless steel offers better heat dissipation. The brake pads also have cooling fins. The construction of the disc in connection with the cooling fins results in a longer service life of the pad, less braking noise, less fading and lower weight.

ICE-TECH FREEZA
ICE TECHNOLOGIES, in combination with the FREEZA brake disc construction, ensures rapid heat dissipation. This leads to a more even braking performance under extreme conditions, extends the service life of the brake lining and reduces the loss of braking force and braking noise.

scope of delivery

  • 1 x Shimano RT-MT800 brake disc (see item description for details)
  • 1 x lock ring
 

 

test verdict

Test result: "Grade 1.9" in the 05/2022 tour (p. 52)

 

Shimano RT-MT800 brake disc with lockring with external toothing

The redesigned brake discs with ICE TECHNOLOGY FREEZA heat dissipation significantly reduce temperatures, ensuring consistent braking performance and a longer brake pad life. The design, with an aluminum core sandwiched between two stainless steel layers, effectively dissipates heat via the integrated cooling fins.

Highlights

  • Stable and versatile braking performance under the toughest conditions
  • First-class and consistent braking performance
  • New ICE TECHNOLOGIES FREEZA construction for even faster heat dissipation
  • 140mm and 160mm optimal for road bike / gravel
  • Locking ring type with external serration

Technical specifications

Assembly:
Center Lock
Diameter:
140 mm
Type:
2-piece
Disc material:
Sandwich composite made of stainless steel outside with aluminum core
Material Spider:
aluminum

Technologies used

Ice-Tech FREEZA

Shimano Ice Technologies ensure rapid heat dissipation from your disc brake. The brake pads are equipped with aluminum cooling fins. The brake disc features a sandwich construction, with stainless steel enclosing an aluminum core. The stainless steel on both sides ensures long-lasting durability, while the aluminum dissipates heat. FREEZA is the advanced brake disc technology, with additional fins in the aluminum of the disc for even better heat dissipation. This cooling technology creates consistently high braking performance and longer brake pad durability, while reducing fading and brake noise.

Scope of delivery

  • 1 x Shimano RT-MT800 Center-Lock brake disc including lock ring

Shimano brake disc RT-MT800 Center Lock external toothing

The redesigned brake discs with ICE TECHNOLOGY FREEZA heat dissipation significantly reduce temperatures, ensuring consistent braking performance and a longer brake pad life. The design, with an aluminum core sandwiched between two stainless steel layers, effectively dissipates heat via the integrated cooling fins.

Highlights

  • Stable and versatile braking performance under the toughest conditions
  • First-class and consistent braking performance
  • New ICE TECHNOLOGIES FREEZA construction for even faster heat dissipation
  • 140mm and 160mm optimal for road bike / gravel
  • Locking ring type with external serration

Technical specifications

Mounting: Center Lock
Diameter: 160 mm
Design: 2-part
Disc material: Sandwich composite made of stainless steel outside with aluminum core
Spider material: aluminum

Technologies used

Ice-Tech FREEZA

Shimano Ice Technologies ensure rapid heat dissipation from your disc brake. The brake pads are equipped with aluminum cooling fins. The brake disc features a sandwich construction, with stainless steel enclosing an aluminum core. The stainless steel on both sides ensures long-lasting durability, while the aluminum dissipates heat. FREEZA is the advanced brake disc technology, with additional fins in the aluminum of the disc for even better heat dissipation. This cooling technology creates consistently high braking performance and longer brake pad durability, while reducing fading and brake noise.

Scope of delivery

  • 1 x Shimano RT-MT800 Center-Lock brake disc including lock ring

Shimano MT800 Brake Disc – Maximum Control for Your MTB Adventure

Don’t want to make compromises on the trail? The Shimano MT800 brake disc with a 180 mm diameter and Centerlock external toothing delivers reliable braking power, even when things really heat up. Thanks to state-of-the-art Ice-Tech FREEZA technology, you’ll enjoy consistent performance and extended brake pad life – for more fun and safety on every ride.

Developed for Sporty Mountain Bikers

Whether it’s steep descents, technical trails, or fast XC laps: The Shimano MT800 brake disc ensures confident deceleration and full control. The innovative sandwich construction made from stainless steel and aluminum guarantees effective heat dissipation. The integrated cooling fins prevent fading even on long descents – so you always stay in control.

What Does OEM/BULK Mean?

Variants marked as BULK are so-called OEM products (Original Equipment Manufacturer). Like the regular products, they are delivered directly to bicycle manufacturers and come to you without retail packaging. Technically and in terms of quality, they are identical to the retail version – so you get full Shimano quality at an attractive price – with no compromises in performance or durability.

Specification

Feature Description
Mount Centerlock (external toothing)
Construction 2-piece, sandwich construction
Diameter 180 mm
Material Stainless steel outer, aluminum core
Cooling Technology Ice-Tech FREEZA with cooling fins
Compatible Pads Metal and resin
Weight approx. 132 g (manufacturer’s specification)
Group Deore XT / Ultegra / GRX
Color Silver-black
OEM Version If marked as BULK, yes – original Shimano OEM equipment

Scope of Delivery

  • 1 x Shimano MT800 brake disc 180 mm
  • 1 x Lockring (external toothing)

Accessory Recommendations

Accessory Why You Need It
Shimano Brake Pads G03A Resin For quiet braking and optimal everyday performance, especially in dry conditions.
Shimano Brake Pads G04S Metal For maximum durability and longevity, ideal for long descents and wet conditions.
Shimano TL-LR15 Lockring Tool The right special tool for quick and safe installation and removal of your Centerlock brake disc.
Shimano Disc Protector SM-RT800 Protects your brake disc from damage during transport or maintenance.
Shimano Brake Bleeding Kit TL-BT03-S For perfect braking performance: regular bleeding ensures a crisp brake feel and maximum safety.

 

test verdict

Test result: "Grade 1.9" in the 05/2022 tour (p. 52)

 

Shimano MT800 rotor Centerlock 140mm  inside ver tooth ung
Shimano MT800 rotor Centerlock 140mm Außenver tooth ung
Shimano MT800 rotor Centerlock 160mm Außenver tooth ung
Shimano MT800 rotor Centerlock 180mm Außenver tooth ung (BULK pack)
Shimano MT800 rotor Centerlock 180mm Außenver tooth ung
Shimano MT800 rotor Centerlock 203mm Außenver tooth ung (BULK pack)
At the moment we can offer the Product safety information only in German

Product safety information

Über die Marke Shimano

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